Anyone else notice the boom mic?

In the scene where Clone Richard and Keenan Wynn's Character arrive at the real Richard's home, there is a shot of Keenan talking, held for at least 10 seconds or so, with an obvious boom mic at the top of the screen. You can see the whole mic and the rig holding it up! I've seen this film 8 or 9 times, never noticed. It's pretty much taking up the top 1/3rd of the screen. Amazing how continuity, editors, etc. never caught it. Wow.